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ISO-176 W415-0118 / B / 10.25.06
17
Troubleshooting: Natural Vents
Main Burner Not Lighting Flowchart
C heck to ma ke s ure the pilot is la rge enough a nd in the
proper pos ition to rea ch the ignition ports . (S ee
"Adjus tments : P ilot F la me")
Ha s the thermopile been tes ted for millivolt genera tion?
T es t the thermopile to ens ure it is within s pecifica tions ,
a nd tha t it is connected. (S ee "T es ting: Millivolts -
T hermopile")
Ha s the inline ga s pres s ure been tes ted?
YES
YES
NO
Ha s the pilot fla me pos ition a nd s ize been exa mined?
NO
C heck to ens ure the proper s upply pres s ures a re
a va ila ble for ignition. (S ee "T es ting: P res s ures ")
NO
Is there a s witch or remote connected on termina ls 1 & 3?
(T HT P & T H)
YES
C onnect a s witch
or remote to
termina ls 1 & 3.
NO
Dis connect a t va lve a nd repla ce with a jumper wire. Did
the burner a ctiva te?
YES
NO
S ee "T es ting: S witches - T .S ta t/T oggle"
YES
NO
T es t the opera tor coil of the
va lve for res is ta nce.
R epla ce the va lve if out of
s pecifica tion. (S ee
"T es ting: F unction -
O pera tor C oil")
Ha ve the s pill & vent s a fety s witches been checked for
proper function?
YES
T es t s witches to ens ure function a nd verify connection.
(S ee "T es ting: S witches - S pill S witch")
NO
Ha s the burner & orifice been checked for blocka ges ?
YES
C heck & clea n a s required.
NO
Summary of Contents for W415-0118
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